PSE UDOXE UROP TERA. 63 



twccn the families are much greater than is usual between the families 

 of the same order. On this account it is proposed by Professor 

 Braucr to break the Pseudoneuroptera up into at least four orders, 

 one for each of the first three families, and one for the last three. 

 It remains to be seen whether this multiplication of the orders will 

 be accepted by entomologists generally. 



ing to the great differences which exist between the families 

 of the Pseudoneuroptera, I will not attempt to make further gener- 

 alizations respecting the group in this place. 



The Pseudoneuroptera is represented in this country by -ix 

 families. These can be separated by the following table : 



TABLE OF FAMILIES OF PSEUDONEUROPTERA.* 



A. With four or two well-developed wings. 

 . B. Antennae inconspicuous, awl-shaped, short and slender. 



C. First and second pair of wings nearly of the same length ; tarsi three- 

 jointed. 2. LIBELLULID^E. 

 CC. Second pair of wings either smaller or wanting; tarsi four- or five- 

 jointed. I. EPHEMERIDjE. 

 BB. Antennae usually conspicuous, setiform, filiform, clavate, capital. 

 pectinate. 

 C. Tarsi two- or three-jointed. 



D. Second pair of wings the smaller. 5. PsociD^;. 



DD. Second pair of wings broader, or at least of the same size as the 



;>air. 3. Pi-ki.ih.K. 



CC. Tarsi four-jointed ; wings equal. 6. TKK.MI IIH.K. 



A A. Wingless, or with rudimentary wings. 



B. Tarsi four-joii 6. TF.KMI i II-.K. 



BB. Tarsi three-jointed. 

 C. Wingless, or with t\vo rudimentary wings of a leathery substance. 



5. PSOCIDvE, 



CC. Four rudimentarv wings, still with distinct venation. 3. 1 

 BBl; A-O- or onc-juintrd. 4. MALLO1M 



Family I. FI-HTMI 

 Order !M< \ <>f some auth 



( May-flics.) 

 The May-flies or Ep] i are often vety common i th< 



vicinity of It \\ frequently th< 



bodies of water is thick: n with th m. Thry an- i by 



* After Baron Often Sacken, in Haven's Synopsis. 



f EphemeridK, Ephemera : tpkemcron (fQt'iittpov), a may-fly. 



toptera ; plectot (jrAeKToJ), pi.. , (rrf/ooK), a wing. 



